GOKUJO.

Kuribayashi Minami returns to Japan after a long stay in Los Angeles. She enters an upper-class girl's high school "Gokurakuin Joshi High School", so called "Gokujo". She tries to dominate the school with her beauty but her plan is spoiled by the silly and pervert behaviors of her eccentric classmates. — Description from AniList community (anilist.co).